Embedded adjustable easy-to-disassemble pipeline hoisting support of neutral beam injection system

Abstract

The invention provides a pre-embedded adjustable easy-to-disassemble pipeline hoisting support of a neutral beam injection system, and relates to the technical field of controllable nuclear fusion neutral beam injection system equipment installing.The pre-embedded adjustable easy-to-disassemble pipeline hoisting support comprises an installation plate, a plurality of pins are arranged at one end of the installation plate, and the pins are used for being pre-embedded in a concrete structural slab to achieve anchoring; the other end is provided with double rows of bolt holes and protrudes below the concrete structural slab; the vertical supporting column is connected with the mounting plate through a bolt, and the horizontal position of the vertical supporting column can be adjusted along the double rows of bolt holes of the mounting plate; the horizontal cross beam is connected with the vertical supporting column through a bolt, and the vertical position of the horizontal cross beam can be adjusted along a bolt hole in the vertical supporting column; the position adjustment of the support in the horizontal direction and the vertical direction is achieved through an adjustable connecting structure among the mounting plate, the vertical supporting column and the horizontal cross beam. The requirement for pipeline installation precision is met, drilling and welding in the later period are avoided, and the construction efficiency and the system airtightness are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of equipment installation of a neutral beam injection system in controlled nuclear fusion, and discloses a pre-buried adjustable and detachable pipeline hoisting support of a neutral beam injection system. BACKGROUND

[0002] In a neutral beam injection system in controlled nuclear fusion, a beam transmission pipeline needs to be operated in an environment of ultrahigh vacuum (<10 -7 Pa), strong neutron irradiation (>10 18 n / m 2 ·s) and space limitation (operation distance <300 mm). However, the existing beam transmission pipeline support has the following problems:

[0003] 1. The expansion bolt hole becomes a hydrogen isotope / helium gas micro-leakage channel, which causes the beam line vacuum degree to drop by one order of magnitude and induces beam scattering;

[0004] 2. Under neutron irradiation, the stress relaxation rate of the stainless steel bolt is >15%, the annual displacement of the traditional support is >2 mm, and the pipeline weld fatigue is induced;

[0005] 3. The coaxiality requirement of the beam pipeline and the injector flange is <±1 mm, but the welded support cannot be adjusted secondarily, which causes a beam deviation loss of >10%;

[0006] 4. The system upgrade needs to increase the cooling pipe diameter (Φ200 to Φ300), but the traditional support is welded and fixed, and needs to be cut and removed in a radioactive environment;

[0007] 5. Drilling is prohibited within 300 mm of the superconducting magnet ring, which causes the traditional expansion bolt to be unable to be installed.

[0008] When the temperature and pressure in the nuclear fusion power generation project change very sharply, and there is a demand for nuclear substances in the later period, a strong magnetic field, strong radiation and ultrahigh pressure environment will be formed, so the component must be able to withstand the impact of internal strong magnetism, strong radiation, high pressure and high temperature under the design reference accident (such as coolant loss accident), and therefore the air tightness and stability of the project are extremely high. The traditional support system leaves a large number of expansion bolt holes, and these post-sealing holes are the weakest link in air tightness, and the depth of the bolt hole is difficult to control for different operators, which makes it difficult to ensure stability and has the risk of falling off in the later period. SUMMARY

[0009] To solve the problems of air tightness damage caused by post drilling and welding, bolt relaxation displacement under radiation, and inability to secondary adjustment of traditional support, the application provides a pre-embedded adjustable and detachable pipeline hoisting support for neutral beam injection system, which is a pre-embedded, full bolt connection and two-dimensional adjustable pipeline hoisting support, adopts the mode of integrally pouring the mounting plate with the concrete structure plate, is combined with the concrete through the cleverly designed connecting node, becomes part of the permanent structure, ensures air tightness and stability, and realizes two-dimensional adjustment through the pre-embedded mounting plate, vertical support column and horizontal beam.

[0010] To achieve the above object, the application adopts the following technical scheme:

[0011] A pre-embedded adjustable and detachable pipeline hoisting support for neutral beam injection system, comprising:

[0012] A pre-embedded mounting plate, one end of which is provided with a plurality of mounting plate pins in a mountain shape, the ends of the mounting plate pins are reversely bent to form mechanical anchoring structures on both sides, and the mounting plate pins are integrally poured and fixed with the concrete structure plate; the other end of the mounting plate protrudes below the concrete structure plate and is provided with a first bolt hole in the length direction for horizontal adjustment;

[0013] A vertical support column, the upper end of which is adjustably connected with the first bolt hole through a bolt to realize horizontal position translation, and a plurality of second bolt holes are arranged in the vertical direction below the vertical support column;

[0014] A horizontal beam connected with the vertical support column through a bolt, the horizontal beam is positionally adjusted in the vertical direction by selecting different second bolt holes;

[0015] The connection positions of the mounting plate and the vertical support column and the connection positions of the vertical support column and the horizontal beam are adjusted to realize horizontal and vertical adjustment.

[0016] Advantages:

[0017] 1. Greatly improve construction efficiency and speed, and reduce traditional procedures: the traditional support needs multiple steps of "erection - waiting - demolition - cleaning", the application saves the cumbersome demolition and a large amount of cleaning work, and the construction period is significantly shortened.

[0018] 2. Rapid installation and two-dimensional adjustment: the adjustable design of the application allows rapid fine adjustment of the height, level and verticality of the support on site to adapt to construction errors, ensure positioning accuracy and save adjustment time.

[0019] 3. Parallel operation: since part of the support is integrated with the structure, subsequent procedures (such as pipeline installation and decorative layer construction) can be carried out earlier based on these pre-embedded parts, realizing multi-trade parallel construction.

[0020] 4. The present application greatly reduces the large amount of labor required for dismantling the support, reduces labor costs; traditional steel pipe fastener support exists loss, loss and long-term rental cost. Although the single investment cost of the support of the present application may be higher, but because it can reuse the core part, the total cost is lower in the long run.

[0021] 5. The present application significantly enhances the safety and reliability of the structure: the traditional support dismantling process is easy to cause structural damage or even collapse due to improper operation or concrete not reaching the strength, the present application eliminates this major safety risk. In the present application, the support part poured together with the concrete structure plate forms an extremely firm connection with the concrete, providing a reliable foundation for subsequent installation of equipment, curtain wall, pipeline, etc., which is much better than ordinary expansion bolts in terms of seismic resistance and fatigue resistance. The present application is designed and poured accurately, and the combination of the support and the main structure is seamless and tight, avoiding damage to the structure during later excavation.

[0022] 6. Before and during pouring, the present application can accurately adjust the position, elevation and flatness of the formwork, thereby ensuring the forming accuracy of the final concrete structure plate and achieving high-standard geometric size control.

[0023] 7. The present application is particularly suitable for complex projects with limited space, special-shaped structures or a large number of embedded parts; the present application is designed as a standardized and modular component, which is easy to use in different projects, flexible to assemble and adapt to various needs. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of the installation of a pre-embedded adjustable and easily removable pipe hoisting support of a neutral beam injection system of the present application;

[0025] Figure 2 is a planar development of the mounting plate;

[0026] Figure 3 is a front view of the mounting plate;

[0027] Figure 4a is a side view of one side of the mounting plate;

[0028] Figure 4b is a side view of the other side of the mounting plate;

[0029] Figure 5 is a top view of the mounting plate;

[0030] Figure 6a is a front view of the vertical support column;

[0031] Figure 6b is a front view of the horizontal cross beam;

[0032] Figure 7a is a sectional view of the vertical support column;

[0033] Figure 7b is a horizontal beam section view;

[0034] Figure 7c is a schematic view of the connection mode of the vertical support column and the horizontal beam.

[0035] In the figure, the reference signs are as follows: 1-concrete structure plate, 2-mounting plate, 21-first mounting plate pin, 22-second mounting plate pin, 23-third mounting plate pin, 31-first bolt hole, 32-second bolt hole, 33-third bolt hole, 5-bolt, 6-washer, 7-nut, 8-vertical support column, 9-horizontal beam, 10-pipe. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0037] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments; the terms "first", "second", "third" are only for description purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise specifically stated and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the embodiments can be understood according to the specific circumstances.

[0038] The present application is a special device only applicable to a neutral beam injection system for positioning and supporting key vacuum, beam or cooling pipes. The application scenario of the neutral beam injection system puts forward the composite extreme requirements of ultra-high vacuum compatibility, strong electromagnetic interference resistance, radiation resistance, and extreme air tightness and structural stability for the support. The present application is a new integrated design from the overall architecture, material selection, structural form to the connection mode according to the above requirements.

[0039] The material of the support body and all components (including bolts, washers, nuts) involved in the present application needs to meet the low outgassing rate requirement under ultra-high vacuum, and undergo special surface treatment (such as electrolytic polishing, using chromium-zirconium-copper plating layer), to prevent outgassing from polluting the system in a vacuum environment, while having radiation resistance. This combination of materials and processes is tailored for the neutral beam system. The manufacturing process generally includes the following steps:

[0040] (1) Pretreatment, including:

[0041] Degreasing: Using alkaline degreasing agent or organic solvent, through immersion, ultrasonic cleaning, etc., to remove oil stains and grease on the surface of the support, ensuring surface cleanliness.

[0042] Rust removal: Using acid pickling method, such as immersing the support in dilute hydrochloric acid or dilute sulfuric acid solution, to remove surface rust and scale, and then rinsing with clean water.

[0043] Activation: Immersing the support in an activator solution to form active sites on the surface, facilitating the deposition of subsequent plating layers.

[0044] (2) Electroplating process, including:

[0045] Plating solution preparation: Using copper sulfate as copper source, potassium chromate or sodium chromate as chromium source, adding appropriate amount of complexing agents, additives, etc., such as citric acid, EDTA (ethylenediaminetetraacetic acid), and brighteners, leveling agents, etc., to adjust the pH value of the plating solution to a suitable range, generally around 3-5.

[0046] Electroplating operation: The pretreated metal support is used as the cathode, placed in the plating solution, and a pure chromium-zirconium-copper block or inert electrode is used as the anode, and a direct current source is connected, with the current density, plating solution temperature and plating time controlled. The current density is generally controlled at 1-3 A / dm 2 , the plating solution temperature is maintained at 25-40℃, and the plating time is determined according to the required plating layer thickness, usually about 10-60 minutes, so that chromium-zirconium-copper ions are reduced and deposited on the surface of the support to form a plating layer.

[0047] (3) Post-treatment:

[0048] Water washing: After electroplating, the support is washed with pure water several times to remove residual plating solution and impurities on the surface.

[0049] Drying: The support is placed in an oven and dried at a temperature of 80-120℃ to prevent rusting on the surface.

[0050] Passivation treatment (optional): In order to further improve the corrosion resistance of the plating layer, the support can be subjected to passivation treatment, such as immersing it in chromate passivation solution to form a dense passivation film.

[0051] Quality detection: detect the plating thickness by thickness gauge to see if it meets the requirements, test the plating hardness with microhardness tester, and check the plating surface with visual inspection, metallographic microscope and other methods to see if it is uniform, smooth, has no defects such as holes, cracks, bubbles, etc.

[0052] Through the above process, the support can be applied to the neutral beam injection system.

[0053] As shown in Figures 1-3 , Figure 4a , Figure 4b , Figure 5 , Figures 6a-6b , Figures 7a-7c The pre-buried adjustable and detachable pipeline hoisting support of the neutral beam injection system of the application comprises a mounting plate 2, a vertical support column 8 and a horizontal cross beam 9.

[0054] The mounting plate 2 is made of high-strength radiation-resistant corrosion-resistant steel material and is subjected to the surface treatment as described above, and has a rectangular shape. One end of the mounting plate 2 is a pin end, and three mounting plate pins are cut out, as shown in Figure 2 , respectively, namely a first mounting plate pin 21, a second mounting plate pin 22 and a third mounting plate pin 23. The first mounting plate pin 21, the second mounting plate pin 22 and the third mounting plate pin 23 form a “mountain” shape, and the first mounting plate pin 21, the second mounting plate pin 22 and the third mounting plate pin 23 are respectively bent towards the two sides of the mounting plate 2. Among them, the bending directions of the first mounting plate pin 21 and the third mounting plate pin 23 at both ends are opposite to the bending direction of the second mounting plate pin 22, as shown in Figure 3 , Figure 4a , Figure 4b , Figure 5 The other end of the mounting plate 2 is evenly distributed with two rows of first bolt holes 31, wherein the pin end is used to be embedded in the concrete structure plate 1 and is integrally poured with the concrete structure plate 1. Through the wrapping anchoring of the concrete, the stability of the mounting plate 2 in the concrete structure plate 1 is ensured; the non-pin end of the mounting plate 2 needs to protrude downward from the concrete structure plate 1, and these bolt holes are used to connect with the vertical support column 8, so that the support can be adjusted within a certain range.

[0055] The concrete structure plate 1 can be a cast-in-place or prefabricated concrete structure plate.

[0056] As shown in Figure 6a , Figure 6b , Figures 7a-7cAs shown, the vertical column 8 adopts a U-shaped channel steel, is made of high-strength anti-radiation corrosion-resistant steel material, and is subjected to the surface treatment as recorded above, and has good compression resistance and bending resistance. The upper end of the vertical column 8 is connected with the mounting plate 2 through two groups of bolts 5, washers 6 and nuts 7, and the lower end is connected with the horizontal cross beam 9 through bolts 5, washers 6 and nuts 7. The bolt holes at different positions can be selected for installation according to actual requirements, so as to preliminarily adjust the position of the embedded adjustable and easily detachable pipeline hoisting support in the horizontal direction.

[0057] The horizontal cross beam 9 adopts an L-shaped angle steel, is made of high-strength anti-radiation corrosion-resistant steel material, and is subjected to special surface treatment, and has good compression resistance and bending resistance. Multiple third bolt holes 33 are uniformly distributed at both ends. The horizontal cross beam 9 is connected with the vertical column 8 through bolts. The bolt holes at different positions can be selected for installation according to actual requirements, so as to realize the accurate adjustment of the components of the vertical column 8 connected with the horizontal cross beam 9 and the fixed pipeline 10 in the horizontal direction.

[0058] Specifically, the first mounting plate pin 21, the second mounting plate pin 22 and the third mounting plate pin 23 are embedded in the concrete structure plate 1 together with the engineering concrete pouring construction. Each mounting plate pin is required to be placed above the lower row of steel bars of the concrete structure plate 1, is anchored with the steel bars through its own structure, and is wrapped by the concrete to achieve the purpose of stability.

[0059] Specifically, the other end of the mounting plate 2 is uniformly distributed with two rows of first bolt holes 31. The first bolt holes 31 need to protrude below the concrete structure plate 1 during construction, as shown in Figure 1 , and sufficient installation space is left to ensure the convenience of later operation, so as to fix the vertical column 8. Through the connection of the two rows of first bolt holes 31, the horizontal and vertical stability of the vertical column 8 is realized.

[0060] Specifically, as shown in Figure 7a , the upper end of the vertical column 8 is provided with two bolt holes corresponding in size and spacing to the first bolt holes 31 on the mounting plate 2. Since the mounting plate 2 is embedded in the concrete structure plate 1 in advance, there are installation errors, measurement errors and pouring errors in the actual construction process, which make it difficult to ensure the transverse accuracy between multiple groups of supports and the problem that the misaligned supports cannot be installed. At this time, the vertical column 8 can be horizontally translated by using the double rows of first bolt holes 31 of the mounting plate 2, so as to preliminarily adjust the spacing and relative position of the two vertical columns 8.

[0061] Specifically, the lower end of the vertical column 8 is provided with uniformly distributed second bolt holes 32 corresponding to the third bolt holes 33 of the horizontal cross beam 9, so as to fix the vertical column 8 and the horizontal cross beam 9. The horizontal cross beam 9 can be vertically translated by using the second bolt holes 32 on the vertical column 8, so as to further achieve the function of horizontal adjustment.

[0062] Specifically, the horizontal cross beam 9 adopts L-shaped angle steel, the cross section is as shown in Figure 7b The left and right ends are provided with uniformly distributed third bolt holes 33, the size of the third bolt holes 33 corresponds to the size of the second bolt holes 32 of the vertical support 8, the relative position of the horizontal cross beam 9 and the vertical support 8 can be changed by using the third bolt holes 33, so as to accurately adjust the vertical and horizontal positions of the support, and finally achieve the purpose of accurate adjustment.

[0063] Therefore, by changing the connection positions of the first bolt holes 31, the second bolt holes 32 and the third bolt holes 33 of the mounting plates 2, the vertical supports 8 and the horizontal cross beams 9, the vertical and horizontal adjustment of the support can be achieved, the consistency of the installation height and the horizontal position of the pipeline 10 is ensured, the drilling and welding processes in the later stage of the project are abandoned, the construction difficulty is greatly reduced, the construction efficiency is improved, and the convenience of the installation and disassembly of the pipeline support during the later upgrading is provided.

[0064] Preferably, four mounting plates 2 can form a group and are connected with four vertical supports 8 respectively, and two parallel horizontal cross beams 9 are connected with adjacent vertical supports 8, as shown in Figure 1 The pipeline 10 is vertically placed on the two parallel horizontal cross beams 9.

[0065] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. For those skilled in the art, it can be understood that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and all should be covered within the protection scope of the present application.

Claims

1. A pre-embedded adjustable and easily detachable pipe hoisting bracket for a neutral beam injection system, characterized in that, include: The pre-embedded mounting plate has multiple mounting plate pins arranged in a mountain shape at one end. The ends of the mounting plate pins are bent in opposite directions to form a mechanical anchoring structure. The mounting plate pins are cast and fixed integrally with the concrete structural slab. The other end of the mounting plate protrudes below the concrete structural slab and has a first bolt hole along its length for horizontal adjustment. The upper end of the vertical support is adjustablely connected to the first bolt hole via bolts to achieve horizontal position translation. Multiple sets of second bolt holes are arranged vertically below the vertical support. A horizontal beam is connected to a vertical support by bolts, and the horizontal beam can be adjusted in the vertical direction by selecting different second bolt holes; By adjusting the connection positions of the mounting plate and the vertical support, and the connection positions of the vertical support and the horizontal beam, adjustments in both the horizontal and vertical directions can be achieved in a coordinated manner.

2. The pre-embedded adjustable and easily detachable pipe hoisting bracket for a neutral beam injection system according to claim 1, characterized in that, The mounting plate is made of high-strength, radiation-resistant, and corrosion-resistant steel.

3. The pre-embedded adjustable and easily detachable pipe hoisting bracket for a neutral beam injection system according to claim 1, characterized in that, The vertical support is a U-shaped channel steel structure, and its upper end is provided with a connection hole corresponding to the first bolt hole.

4. The pre-embedded adjustable and easily detachable pipe hoisting bracket for a neutral beam injection system according to claim 1, characterized in that, The horizontal beam is an L-shaped angle steel structure with multiple third bolt holes at both ends for connection to the vertical support column.

5. The pre-embedded adjustable and easily detachable pipe hoisting bracket for a neutral beam injection system according to claim 1, characterized in that, The mounting plate has three pins: the first mounting plate pin, the second mounting plate pin, and the third mounting plate pin. The bending direction of the first and third mounting plate pins is opposite to that of the second mounting plate pin.

6. The pre-embedded adjustable and easily detachable pipe hoisting bracket for a neutral beam injection system according to claim 1, characterized in that, The upper end of the vertical support is connected to the mounting plate by two sets of bolts, washers, and nuts.

7. The pre-embedded adjustable and easily detachable pipe hoisting bracket for a neutral beam injection system according to claim 1, characterized in that, The first bolt hole is in a double row.

8. The pre-embedded adjustable and easily detachable pipe hoisting bracket for a neutral beam injection system according to claim 1, characterized in that, The mounting plate pins are embedded above the lower layer of reinforcing steel bars in the concrete structure slab.

9. The pre-embedded adjustable and easily detachable pipe hoisting bracket for a neutral beam injection system according to claim 1, characterized in that, The mounting plate, vertical support column, and horizontal beam are electrolytically polished or coated with chromium-zirconium-copper, giving them radiation resistance.

10. The pre-embedded adjustable and easily detachable pipe hoisting bracket for a neutral beam injection system according to claim 6, characterized in that, The lower end of the vertical support is connected to the horizontal beam by bolts, washers, and nuts.

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